Maps can be about a lot of things, from strictly geography and location down to the individuals who reside in an area. Illustrator Jenni Sparks embeds herself in a city, takes copious notes, and draws detailed maps about what she learns. Her style lends to the community side of the spectrum.
Here’s a short video on her process, which mainly involves walking around the city and talking to locals about what they think is important.
See also Stephen Walter’s detailed, hand-drawn map of London from a few years back.